After stunning scenes across Northern Ireland last night, the Northern Lights will "likely" be able to be seen tonight, the Met Office has said.
The Aurora Borealis displays can be seen on rare occasions in different parts of Northern Ireland, Scotland and northern England.
It is caused by electrically charged particles from space entering the Earth's upper atmosphere at high speed.
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However, on Sunday night they were visible across much of the UK, with reports of the phenomena being spotted as far southern England.
And the Met Office indicated that the Aurora Borealis could reappear in all its glory again tonight (Monday).
In a tweet shared just before 6.30pm, the Met Office said: "The Aurora Borealis may be visible as far south as central England tonight where skies remain clear. The Northern Lights are also likely to be seen again on Monday night."
The Met Office later confirmed that there had been many sightings across the UK. In a tweet shortly before midnight, the weather forecasting service used quite technical language to explain the occurrence, saying: "A coronal hole high speed stream arrived this evening combined with a rather fast coronal mass ejection leading to Aurora sightings across the UK."
A Met Office map showing places where the natural display might be seen showed the tip of Scotland tinged with red from about 9pm, indicating a "100 per cent probability" of the aurora. Meteorologists from the office said: "The lights generally extend from 50 miles to as high as 400 miles above the Earth's surface. The best conditions to view the lights are when the sky is dark and clear of any clouds.
"Ideally, the lights will be best viewed away from any light pollution, in remote areas, facing the northern horizon — north facing coasts produce some of the best viewing locations. The northern lights are most active during the Equinox and Solstice in March/April and September/October.
"Predominantly the northern lights are best viewed in Scotland, North England, North Wales and Northern Ireland. However, under severe space weather conditions, the lights can be seen throughout the UK."
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